#!/usr/bin/env node

const http = require('http'),
            fs   = require('fs');

let buf = {};

http.createServer((req, res) => {
    sendFile(req, res);

}).listen(8080);

function sendFile(req, res) {
    let file = __dirname + req.url;

    if(!buf[file]) {
      if(!fs.existsSync(file)) {
              res.statusCode = 404;
                    res.end(`${file} not exist!`);
                          
                          return;
                              
      }

          console.log('Disk IO:', file);
              buf[file] = fs.readFileSync(file);   
                
    }

      res.end(buf[file]);
        //console.log('\n', buf, '\n');
        //
}
